Hastelloy Screws are top-notch, corrosion-resistant fasteners designed to thrive in the toughest and most chemically aggressive environments. Made from high-performance nickel-molybdenum-chromium alloys, these screws excel at resisting pitting, crevice corrosion, and stress-corrosion cracking. Their remarkable stability in acidic, oxidizing, and reducing conditions makes them perfect for critical tasks in chemical processing, petrochemical plants, pollution control systems, and marine engineering. With their ability to maintain excellent mechanical integrity at high temperatures, Hastelloy Screws ensure secure and long-lasting fastening in demanding applications. They’re the go-to choice for reactors, heat exchangers, pumps, pipelines, and industrial equipment facing harsh corrosive media.
Hastelloy B2 is a nickel-molybdenum alloy specifically engineered to handle some of the toughest chemical challenges. Its composition provides outstanding resistance to hydrochloric acid across a wide range of concentrations and temperatures, along with excellent performance in other non-oxidizing media. Mechanically, these forgings are incredibly strong and durable, offering high tensile strength and good ductility even under extreme thermal stress. This combination allows them to maintain their structural integrity in environments that would quickly degrade lesser materials.
| Standard | IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI and all International Standards |
|---|---|
| Threads: | BSF, UNF METRIC, UNC, BSW or as required |
| Standard | ANSI – American National Standards Institute
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| Fasteners/ Bolts Size | M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160 |
| Length | 3 mm to 200 mm |
| Head drive: | Phillips, Slotted, Phillips/Slot, Six-Lobe etc |
| Test Certificate | as per EN 10204 / 3.1 Manufacturer Test Certificate |
| Finishing | Zinc white, (yellow, black, blue), black oxide, Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated, Stainless steel: Passivated Self-Colour, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Sherardized, Stainless Steel, some special one like DACROMET and Mechanically Applied coating |
| raw materials of Source | JSPL, Usha Martin, Tata Steel, Mukund Steel, RINL, Dhamm Steel etc. |
| Form | Square, Hex, Threading as per Gauge, Round Etc. |
| Process of Production | M2-M24: Cold Froging, hot forging M24-M100, machining and CNC for Customized connecting element |
| Surface Coating |
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| Packing | IN BULK: pallet, canton, carton / Small Boxs / pallet or customer request |
| Grade | C | Mn | Si | Co | S | Ni | Cr | Fe | Mo | W | V | P |
| Hastelloy Fasteners | 0.010 max | 1.0 max | 0.08 max | 2.5 max | 0.03 max | Bal | 14.5 – 16.5 | 4 – 7 | 15 – 17 | 3 – 4.5 | 0.35 max | 0.04 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Hastelloy Fasteners | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
The resilience of Hastelloy B2 forgings makes them indispensable in sectors where failure is not an option. You’ll typically find them performing critical roles in chemical processing equipment like reactors, distillation systems, and pipes handling aggressive acids. They are also essential in the pharmaceutical industry for manufacturing processes requiring ultra-pure conditions, and in pollution control scrubbers. Essentially, any application involving severe reducing conditions, particularly with hydrochloric acid, relies on the unmatched reliability of these components to ensure safe, continuous, and efficient operation.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
